export interface StdinMessage {
    id: number;
    command_name: string;
    project_dir: string;
    data: string;
    encoding: string;
    created_at: number;
}
interface CreateStdinMessage {
    commandName: string;
    projectDir: string;
    data: string;
    encoding?: string;
}
/**
 * Insert a new stdin message into the queue for a service.
 */
export declare function createStdinMessage(entry: CreateStdinMessage): number;
/**
 * Get and delete the next pending stdin message for a service.
 * Returns null if no messages are pending.
 */
export declare function popStdinMessage(commandName: string, projectDir: string): StdinMessage | null;
/**
 * Delete all pending stdin messages for a service.
 */
export declare function clearStdinMessages(commandName: string, projectDir: string): void;
export {};
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